ASTROSAT CZTI

Data Quality Report

Orbit 20086

Creation date: 2024-06-27T18:11:05.825478
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_180T01_9000002992_20086cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20086cztM0_level2_quad_clean.evt
Size (bytes)405,362,88086,273,280
Size386.6 MB 82.3 MB
Events in quadrant A2,981,883567,043
Events in quadrant B2,882,001568,346
Events in quadrant C2,824,103540,793
Events in quadrant D3,196,048533,084

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124151
B0120321
C0119391
D0132281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5774641.108417%
B5775520.900433%
C5775631.090909%
D57751071.852814%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 6824 5775 20 20 0.29% 0.35%
B 6825 5776 5 5 0.07% 0.09%
C 6825 5776 1 1 0.01% 0.02%
D 6825 5776 62 62 0.91% 1.07%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 4 2 151942 1032.85 728 715 146.4
A 14 238 7912 49.15 728 715 146.4
A 12 16 7668 47.49 728 715 146.4
B 4 80 23939 167.31 720 702 138.9
B 12 111 16437 113.3 720 702 138.9
B 11 111 14656 100.47 720 702 138.9
C 14 238 109744 675.04 689 696 161.5
C 4 254 26596 160.33 689 696 161.5
C 13 61 4914 26.11 689 696 161.5
D 1 52 482019 2817.62 701 682 170.8
D 13 249 31004 177.5 701 682 170.8
D 2 234 26971 153.89 701 682 170.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter